Published 02/04/2022 at 386 × 200 in Comparative study on performance and microstructure of compositewater-soluble salt core material for manufacturing hollow zincalloy castings Fig. 8 Schematic diagram of strengthening-toughening mechanisms: (a)KNC + BP and (b)KNC + GP. Fig. 8 Schematic diagram of strengthening-toughening mechanisms: (a)KNC + BP and (b)KNC + GP.